Improvement in journal-bearings for car-axles



W. C. BAKER. Y Journal-Bearings for CarAxles. NO .14)284,iPatentedAprlLlSM.

UNITED STATES PATENT OFFICE.

WILLIAM C. BAKER, OF NEW YORK, N. Y.

IMPROVEMENT IN JOURNAL-BEARINGS FOR CAR-AXLES.

Specification forming part of Letters Patent No. 149,284, dated April 7,1874; application filed January 13, 1874.

To all whom it may concern:

Be it known that I, "WILLIAM C. BAKER, of the cityand State of New York,have invented an Improvement in J ournabBearin gs for Gar- Axles, 85e.,of which the following is a specification:

Bearings for car and other axles have been made of babbitt-,metal castinto a cavity in the box of the axleebox; but these are liable tofracture in consequence of the box being coinparatively thin andrecessed, and the babbittmetal being separate from the bearing-block. Inother cases lead and soft meta-l have been employed, the object being toallow the journal to embed itselfl in the soft metal under the pressureto which it is subjected. In some instances the boxes have been bentwith a hammer when they did not properly rest upon the journals; but ,inall cases the inequality of pressure at dierent ends ofthe box, inconsequence of inaccuracies in the axle-box, have caused one end to wearmore -rapidly than the other.

My invention is iliade with reference to ,obviating the difficultiesbefore mentioned and causing the box to be self-accommodating to thesurface of the journal. I make use of a metal box, having a lining ofbabbitt-metal or similar alloy soldered or otherwise united perfectlywith the inner surface of the bearingblock, and this brass box issufliciently thin to yield easily and bend to the curvature of theaxle-journal; and, in order to secure a uniform and perfect pressureupon all parts of the box, I make use of a bearing-block, of iron brassbox cannot become detached or broken, and, at the same time, it formsone of the most perfect Wearing materials and any inequalityof bearingis rapidly removed by the bending journal.

of the bearing-box under the weight and pressE ure to which it issubjected.

In the drawing, Figure l is a longitudinal, and Fig. 2 is a cross,section of the journalbox, axle, and bearing-block.

The axle or shaft a and journal b are of any desired character, myimproved bearing or box being available with shafts and journalsgenerally, but primarily invented for car-axle boxes. The brass orcomposition box d is lined with babbitt-metal or similar alloy at e,soldered or otherwise united throughout, surface to surface, so that thebabbitt-metal cannot become loose or break; and the metal box d is ofnearly uniform thickness, and sufficiently thin and light to allow ofthe box bending, if necessary, to conform to the curvature of the Theiron or other strong bearing'- block 7L is adapted to fit into thehanger-housing or oil-box of car or truck; and it is concave upon itsunder surface, and adapted to receive the journal-box d, with anintervening sheet of india-rubber or other yielding material at i. Thismaterial conforms to the surfaces between whicliit is introduced inconsequence of its yielding character, and an even bearing is producedof the one part on the other. thrust and wear; and the babbitt-metal,ex-

tending to the ends, also serves to make the boxes durable.

I claim as my invention- The brass box d, with the lining ofbabbittmetal permanently united to its inner surface, and made of nearlyuniform thickness, so as to conform to the curvature of the journal, bybending, if necessary, in combination with' the rigid bearing-block hand intervening yielding' material i, substantially as and for thepurposes set forth.

Signed by me this 10th day of January, A. D. 1874.

Vitnesses:

GEO. T. PINCKNEY, GHAs. H. SMITH.

W. C. BAKER.

The end flanges l l receive the lateral

